Composition for saturating fabrics and process of making same



, and

' Patented July 10, 1923.

PATENT oFFwE.

nns'rnn IKIBSCHBSAIUN, or cnrcaeo, rumors.

comrosmron roa SAIURATING memes AND rnocsss or mm shun.

1T6 Drawing.

Tp all whom it may concem:

Be it known that I, Lns'rnn Krnscmanamw, a citizen of the United States, residing in the city of Chicago,.county of'Cook, and State of Illinois, have invented certain new eful Improvements in Compositions for. aturatingS Fabrics and Processes of Making Same, 'ofwhich the following is a specification. f This invention relates to compositions for fabrics and recess of making same and-is more partimfiarly directedto the saturation of fabrics, 'as for example, tape, canvas,

' duck and tarpaulin. The invention consists essentially in making anemulsion of water,

' a colloidal agent, as for example, clay, and

asphalt or bitumen and then adding to the emulsion a liquid oil fluxing agent. The in chea ties. By the use of the liquid fluxing agent, 'parts' of asphalt used.

' the emulsion breaks easily and also acts use a less one of its constituents.

vention may be .described as a cold satura-- tion for fabrics of the character referred to. The invention is characterized by the fact that while the water forms the external phase of the emulsion, the emulsion nevertheless possesses adhesive characteristics in The product canbe made from relatively materials available in largezquantimore effectively asfa saturant. It is to be noted that'initsbroader aspects, the inventiomcovers an emulsion in which two biconstituents, preferably of difierent character, each form the, internal phase of an emulsion with water as the external phase.- -The harder.bituminous'constituents pitches may be substituted for the as -referred to.'-but if, for example, coa should be used, the solvent should. solvent may be petroleum-or asphaltic' residues or any form of natural or artificial asphalt, soIid'orse'mi-solid, which should, however,

be 'in heated fluid condition at 'the- .timemhe emulsionis made. V

The softer fiuxing oil may be topped crude oil. such as obtained from the re1a-- tively' cheap heavy Mexican' on California petroleum oils. In certain cases, other halt tar be a for coal tar, as for example, creosote oil.

The following illustrative method of carrying out the invention may be given: Pe-' 'troleum asphalt of say 10 to 20 penetration at 7 7 degrees F. and having a' melting point of say 140 to 170 degreesF. is reduced-to fluid condition heat.) While in this fluid Application filed October 5, 1921. serial 1%. $05,653.

heated'condition, this-asphalt is added to a previously formedaqueous mixture of water and colloidal clay in such away as to form an emulsion in which water consti tutes the external phase. The water is preferably hot at the time the heated asphalt is i added to it. The proportion of the aqueous constituents of the emulsion may be varied as desired. For purposes of shipping it ma be desirable to make a' relatively thic emulsion in which case the proportion of H water will be less than if the emulsion is to be made at the point where it. is laid. A relatively thick emulsion may consists of say 35% water, 10% clay and 55% asphalt. The above percentages-are on a weight basis. To this emulsion while the latter is either hot or cold, is added the fluxing agent, as "for example, a the topped Mexican crude .abo've referredto of about 10 Baum gravv ity, or instead of the toppedMexican crude,

a character of the fixing agent used, for exg ample, in the case of-topped Mexican crude about 20 parts might be added to the 100 er'centageo'f fluxing agent: may be used. the other hand, where "a heavier fluxing centage' could be used.- Y

agent is; adjusted so that when combine with-the harder asphalt in the emulsion, the resulting composition will produce a binder having 'a' high degree of cementitiousness or toughnessand will have the property of ,rea v flowing and fluxin'g with the harder aspha t contained in the emulsion.

It is tobe understood that the mere ad .dition of this fluxingagent does not in itself break the emulsion, but places the emulsion in a condition so that when it .isdistributed in thin films, the bituminous constituents thereof readily flow together and coalesce. It is 1 to be understood that the fluxing agent itself forms an emulsion with the water andcolloidal clay, thus in effect-constituting a system in which two distinct bituminous constituents form the internal'phase of the same emulsion.

The emulsion above described may now' be used as 'a cold saturation for "various forms of fabric or. for pasting paper, as for example, incarton boards, etc. The fabrics agent is used, a larger per-' ,The; amount and character of this fluxin Where a lighteroil may be run through a tank containing this cold saturation which may be applied either at atmospheric pressure or under a pressure of from 50 to several hundred pounds or under a vacuum.

- I claim as my invention:

1. A process'of making an emulsion, consisting in mixingwater, clay and bitumen while the'last is in heated liquid condition so that the water constitutes the external phase of the emulsion, and adding thereto a hydrocarbon flux. r

2. A process of making an emulsion, consisting in mixing colloidal clay, and water, adding thereto a bitumen while the latterl is in heated liquid condition so as to form an emulsion, then adding thereto a hydrocarbon oil substantially liquid at normal temperatures, the two hydrocarbon constituents forming the internal and the water the external phaseof the emulsion. I

3. A waterproofing composition,- consisting of an emulsion of water, clay bitumen and a hydrocarbon oil, the two hydrocarbon constituents forming the internal phase and the water the external 'phase of the emulsion. 7

4. A process of making an emulsion consisting in mixing .water, an emulsifying agent and bitumen while the last is in heated liquid condition so that the water constitutes the external phase of'the emulsion, and adding thereto ah .drocarbon flux.

' LESTER KlRSCHBRAUN. 

